// support.js
class Container {
	static of (value) {
		return new Container(value)
	}
	constructor(value) {
		this._value = value
	}
	map(fn) {
		return Container.of(fn(this._value))
	}
}

class Maybe {
	static of (x) {
		return new Maybe(x)
	}
	constructor(x) {
		this._value = x
	}
	isNothing() {
		return this._value === null || this._value === undefined
	}
	map(fn) {
		return this.isNothing() ? this : Maybe.of(fn(this._value))
	}
}

module.exports = {
	Maybe,
	Container
}
